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AIMODELRACE
Build software

Best agent for frontend & ui

Turning designs, screenshots or descriptions into polished, accessible, responsive interfaces.

Leader

Narrow lead

Claude Opus 5.5 (Claude Code)

Index

94

Lead

+2.0

% ahead

2.2%

over Claude Sonnet 5.5.

Full ranking

Task index, 0 to 100. Bars are scaled to the field, so small gaps look small.

  1. 1
    94

    Best at fitting new UI into existing design systems.

  2. 2
    Claude Sonnet 5.5
    −2.092

    Nearly as good, faster iteration loops.

  3. 3
    Kimi K3
    −3.091

    Developers' favourite open model for visual polish.

  4. 4
    v0
    −5.089

    Fastest path from idea to shippable React UI.

  5. 5
    GPT-6 Astra (Codex)
    −6.088

    Strong, slightly more generic styling.

  6. 6
    Gemini 4 Argon
    −8.086

    Excellent at reading complex mockups.

Key takeaways
  • 1Claude Opus 5.5 leads for production front-end work inside real codebases.
  • 2Kimi K3 and Sonnet 5.5 are within a photo finish on visual taste.
  • 3Give a visual reference: screenshot or design file beats prose.

Recommended setup

Claude Code or Cursor with Opus 5.5 / Sonnet 5.5, your component library in context, and Playwright screenshots for the agent to check its own work.

Prompts that work

Screenshot to component

Recreate the attached design as a {{framework}} component using our existing {{design_system}} components where possible. Match spacing and typography closely, make it responsive down to 360px, keyboard accessible, and take a screenshot to compare against the design before finishing.

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